is the kind of QR code lock similar to shared bikes. What hardware should I buy to implement it? the current idea is
scan the QR code-send a request to the server-server authentication-return the command to open the lock (authentication failed without opening the lock)
now the question is how to send the request after scanning the QR code. Does each bike have a separate form and scan the code to jump the link?
and return request to unlock and buy a relay analog or physical lock, and is there a similar development board, or is there a recommended chip if you assemble it yourself? thank you